193980969529 has 4 divisors (see below), whose sum is σ = 197640987876. Its totient is φ = 190320951184.

The previous prime is 193980969487. The next prime is 193980969557. The reversal of 193980969529 is 925969089391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 925969089391 = 431 ⋅2148420161.

It can be written as a sum of positive squares in 2 ways, for example, as 176254709929 + 17726259600 = 419827^2 + 133140^2 .

It is a cyclic number.

It is not a de Polignac number, because 193980969529 - 2¹³ = 193980961337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193980969629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830009094 + ... + 1830009199.

It is an arithmetic number, because the mean of its divisors is an integer number (49410246969).

Almost surely, 2^193980969529 is an apocalyptic number.

It is an amenable number.

193980969529 is a deficient number, since it is larger than the sum of its proper divisors (3660018347).

193980969529 is an equidigital number, since it uses as much as digits as its factorization.

193980969529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660018346.

The product of its (nonzero) digits is 85030560, while the sum is 70.

The spelling of 193980969529 in words is "one hundred ninety-three billion, nine hundred eighty million, nine hundred sixty-nine thousand, five hundred twenty-nine".